Of course, another Democratic first lady — Hillary Rodham Clinton — once said to Larry King that "when we got toward the end of the White House years, and people started asking me to run for the Senate — and very knowledgeable, politically sophisticated people — I said 'no, that's absurd, that's ridiculous, I'm not going to do that.' "

Clinton was elected to the Senate from New York State in 2000.

Michelle Obama is making the rounds of media outlets to talk about her latest project, a book called American Grown.As Morning Edition reported, it's a diary of that garden through the seasons and a portrait of gardening in America, past and present.